PURPOSE To investigate biometrically the differences between plateau iris configuration (PIC) eyes and primary open angle glaucoma with narrow angle eyes. METHODS A comparative study involving a case series with 20 eyes of 11 plateau iris configuration patients and 45 eyes of 27 primary open angle glaucoma with narrow angle eyes patients was done. The following measurements were taken: cornea...

A new shaped circularly polarized dielectric resonator antenna (CP DRA) is studied with branch-line coupler and log-periodic balun for the GPS application. Since the coupler and balun are located under the DRA, it does not increase the footprint of the antenna, as a result the system is very compact. Two configurations are considered in this paper. In the first configuration, an external 50Ω lo...

BACKGROUND AND OBJECTIVE To evaluate ultrasonography outcomes in eyes with stage 5 retinopathy of prematurity (ROP). PATIENTS AND METHODS Patients with bilateral stage 5 ROP were evaluated retrospectively. Ultrasonography examination was performed in all cases. Patients' demographic features and ultrasonography findings such as axial eye length, funnel configuration, subretinal hemorrhage, an...

A straightforward and transparent model, based on Gaussian beam optics, for the axial r0 resolution of a confocal microscope is presented. A confocal Raman microscope was used to determine the axial confocality in practice. The axial response of a thin planar object was measured for three different objectives, two pinhole sizes and a slit. The results show that, in the case of a confocal config...

We propose two techniques to suppress intrinsic sidelobe spectra in all-fiber acousto-optic tunable filter using torsional acoustic wave. The techniques are based on either double-pass filter configuration or axial tailoring of mode coupling strength along an acousto-optic interaction region in a highly birefringent optical fiber. The sidelobe peak in the filter spectrum is experimentally suppr...

the informal settlements are those parts of city which have been formed without plan or minimum facilities and services. therefore, they are considered as priorities in management cities for services and improving quality of life. in this regard, it is important to get solutions to make positive changes with the lowest cost and direct intervention. therefore, this study aims to explore the link...

A large diameter (up to 73.8 cm), high-density helicon plasma with short axial length (≤ 81 cm) has been successfully produced using a flat spiral antenna. The electron plasma density can reach up to ∼ 10 cm−3 with the input radio frequency (rf) power of < 4 kW for various axial lengths, and the density scaling as a function of the axial length is in good agreement with expectations. The strong...

Article history: Received: 25.10.2014. Received in revised form: 19.03.2014. Accepted: 20.03.2014. To analyze the air flow interference between upper and lower wings in axial ring wing configuration, NASA SC(2)-1006 supercritical airfoil is chosen as the basic airfoil. Flow field around the doublewing structure with different relative distances between upper and lower wings is numerically simul...

We study the production of massive fermions in arbitrary vector and axial-vector classical backgrounds using effective action techniques. A perturbative calculation shows the different features of each field and in particular it is seen that pure temporal axial fields can produce particles whereas it is not possible for a pure vector background. We also analyze from a non-perturbative point of ...